While it's no where NEAR what you just did, I accidently fasted for 32 hours. I had planned to break the fast at 24, but got busy and suddenly my heart was beating out of my chest, I started sweating and wanted to run around and fight someone and scream and lay down and sleep all at the same time... and then realised that I was really. truly. HUNGRY!!! ha ha! Apparently my fasting ability is not 30+ hours!